Pipe tongs



.July 28, 1925. 1,547,543

W. R. WELTY PIPE Tones Filed Nov. '9, 1924 Patented July 28, 1925.

WILLIAM R. WELTY, OF DUNCAN, OKLAHOMA.

PIPE TON'GS.

Application filed November-29, 1924. Serial No. 762,903.

To all whom itmag concern: I v r i Be it known that I, WILLIAM R. WELTY, a citizen of the United States, residing at Duncan, in the county of Stephens and.

State of Oklahoma, have invented certain new and useful Improvements in Pipe Tongs, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in pipe tongs, and more particularly to the construction of that form of pipe tong employed in seating sections ofthe casing of oil Wells. a r

These tongs, as is well known to those familiar with the art, are extremely-heavy and acccordingly must be very securely made, for otherwise when-the tong is elevated above the derrick floor there would be likelihood of'some part accidentally'dis-g engaging and falling upon one of the workmen upon the floor. Accidents of this character often occure and in the majority. of instances are the result of wearing of the pintle pinsby which the sections of the tong proper are connected .tofone another. i y,

' An important objectof this'invention is to provide a device so constructed that the, pintles form an integral portion ofthe jaw sections andareso. engaged with the re maining jawsections that, there is no possibility of their becoming disengagedto per-1 mit separation of the sections.

with the pipe is materially facilitated, thus lessening the time necessary toalter, the tong to permitits use with casing of greater or lesser diameters. V

to provide a device of thischaracterwhich, may be cheaply produced, which will. be

durable and efficient in service and a general improvement in the art.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and where1n Figure 11s a plan vlew of a caslng tong constructed in accordance with my invention;

1 v upwardly therefrom, A still further object of theinjvention is;

Fig. 2 is a perspective view o f-the wrench,

showing the various parts thereof sepadrawings, the tong proper consists, in the present illustration, of a main body section 10 and connecting body sections 11 and 11 The main body section 10 is formed with an arcuately curved inner face 12 and at its ends with lugs 13 arranged medially yerti-' cally ofthe'ends and having vertical bores 14:.- Above; and below the lugs 13, the ends of the body section 1 0 are recessed, as at 15, sothat the upper surface of the lugsis circular. The inner wall of the body section 10 is formed with a socket recess 16 arranged substantially centrally of the, inner face both vertically and longitudinally. This socket is intersected by a vertical bore 17 extending through the upper face of the tong. I v

The -connecting. sections 11 and 11 are each form'edwith an upper and a lower part 18 and 19 providing a central section having at one side of the ends of'such central sec tion, that is to say, either at the top or hottom of such ends, dependent on whether the n sectionbea section 18 or a section 19. The

A furtherobject of the invention is to. provide a. device of this character which-is; so constructed that interchanging of the jaws of the tongs which jdirectly engagev lugs of the sections 18 at that end thereof which-is to be engaged with; the body section 12 abut the upper surfaces of the lugs 13,

while the lugs. at the corresponding ends The sections in assembled relation form a section of the same height and approximately the same length as the intermediate body section-10.- Adjacent faces of these sections at the approximate centers thereof 4 is a similar section on the line downwardly or position. It will be obvious thatthese aux are formed with notches 23 combined when the sections are in assembled relation to produce a recess 16 similar to the recess 16 of the body section 10. The upper section 18, in each instance, has a bore 24 opening through the wall of its notch 23 and combining with a similar bore 25 with which it is aligned and which extends from the bottom of the recess 23 of the lower section 19 downwardly into the body of-the lower section to form a bore similar to the bore 17 of the body section 10. The sections 18 and 19 are held in assembled relation by any suitable means, such as bolts or machine screws, generally indicated at 26-. The lugs 22 of the section llare'employed as a pivot for a handle lever 27, this handle lever having in its outer enda notch 28 forreceiving the combined lugs 22. at the outer end of the section 11. By engaging these lugs with this notchand swinging the handleplever, the sections maybe brought together so that they form a substantially circular band, the outer lugs of the section 21 having notches 21 receiving the ends of the lugs 21 of the section 11 so that this circular arrangement can be had. i

In the construction of the sections 10 and 11 vertically extending teeth are preferably formed upon the inner surfaces 12 and 20 thereof, so that these surfaces may borough and when grasped about a pipe will cling thereto to prevent slipping of the pipe. In order tliatthe device may be employed with pipes of varying diameters auxiliary jaws 29 are provided, each having an arcuately curved outer face 30 adapted to engage against the face 12 or 20 and having pro= jecting outwardly therefrom at the center thereofa lug of the same size and shape as the sockets 16 and 16 of the sections 10, 11

and 11 Theselugs are formed with a ver-;

tically extending opening which when the jaw is properly positioned aligns with the opening 16 or the openings 24 or 25, as the case may be, for the reception of retaining pins 31 whereby the jaws are held in fixed iliary jaws may be made of any desired thickness within certain limits,so' that the wrench may be applied for practically all sizes of casingpipe.

It will furthermore be obvious: that the structure hereinbe'fore set forth is capable ofa certain range of change and modification without materially departing from the spirit of'my invention, and I accordingly do not limit myself to such specific structure except as hereinafter claimed.

1. A clamp for grasping circular objects to rotate the same, comprising a central section having at the ends thereof outstanding lugs disposed medially vertically upon said ends and having vertically extending bores,

and end sections eachv including separable upper and lower parts and means for holding said parts in assembled relation, each part having a lug confronting the corresponding end of the coacting lug of the central section and each part having upon each lug thereof a pintle directed into the verticalbore oftheassociated lug, the free end of one of said end sections having pivotally connected therewith to" swing in the general plane of the sections a'liandle lever, and-coactingmeans uponthe handle lever and the free end ofthe other ofthe sections where the leveraged the handle may be emb 1 loyed to shift the free ends of-said end sec titans-toward oneanother to thereby corrstrict the clamp upon a circular element. 1

2. A clamp for grasping circular objects to rotate the samecomprising acentral section having at theends thereof outstanding lugs disposed medially vertically upon said ends and having vertically extending bores,

bore of the associated lug, the free end of,

one of saidend sections having pivotally connected therewith toswing in the general plane of the sections'ahandle lever, coacting means upon the handle lever and the free end of the other of the sections whereby the leverage of the handle may be employed to shift the endsof said end sections toward one another to thereby constrict the clamp upon a circular element, the inner faces of, said sections beingieachformed with a socket, removable pins extending vertically through the sections and through the 1 sockets thereof,

and auxiliary jaws corresponding in numher to the sections and each having upon their outer faces lugs adapted to enter the. sockets of the sect ons, said lugs having openings permittingthe passage of said rc-i movable'pinsa 1 i t i i 3. A clamp for grasping circular objects to rotate the same comprising a central arcuately curved section having at the ends thereof outstanding lugs disposed medially vertically u on said ends and it having vertically extending bores, and end sections each including an upper and a lower part and means whereby saidparts are detachably se cured together, each part having a lug confronting the corresponding end of the coact- 1 inglug of the central section and each part having upon adjacent faces thereof pintles directed toward one another and combining to form a pivot, a handle mounted upon said pivot intermediate its ends and having at one end a socket receiving the other of the pintles.

4. A clamp for grasping circular objects to rotate the same comprising a central section having at the ends thereof outstanding lugs disposed medially vertically upon said ends and having vertically extending bores, and end sections each including an upper and lower part and means for securing said parts in assembled relation each part having a lug confronting the corresponding end of the coacting lug of the central section and each part having upon each lug thereof a pintle directed into the vertical bore of the associated lug, the free end of one of said.

end sections having pivotally connected therewith to swing 1n the general plane of the sections a handle lever, coactmg means upon the handle lever and the free end of the other of the sections whereby the leverage of the handle may be employed to shift the free ends of said end sections toward one another to thereby constrict the clamp upon a circular element, said central section being provided centrally thereof with a socket, said end sections being provided in adjacent faces of each part thereof with notches combining to form upon the inner face of the end sections when the parts are assembled sockets similar to the socket of the central section, each of said sections having aremovable pin directed therethrough and extending through said socket, and auxiliary jaws having lugs to enter said socket provided with openings through which the pins may extend.

In testimony whereof I hereunto aflix my signature.

WILLIAM R. WELTY. 

